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This example demonstrates the reading of the PlayStation controller in the Nucleo.
Intro
This example demonstrates the reading of the PlayStation controller in the Nucleo.
Parts
| STM32 Nucleo F446RE |
| Connector for the PS controller |
| LED 2pcs |
| Register 100k ohm |
| Register 470 ohm 2pcs |
| Breadboard |
| Wires |
Wiring diagram
This circuit diagram was created by fritzing.
| PS con. | Nucleo |
|---|---|
| 1 | MISO PC_11 PullUp |
| 2 | MOSI PC_12 |
| 3 | - |
| 4 | GND |
| 5 | 3.3v 3v3 |
| 6 | CS PD_2 |
| 7 | SCK PC_10 |
| 8 | - |
| 9 | - |
Diff: main.cpp
- Revision:
- 0:871415d77569
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Mar 12 10:09:49 2016 +0000
@@ -0,0 +1,56 @@
+#include "mbed.h"
+
+// SPI interface
+SPI pad_spi(PC_12, PC_11, PC_10); // MOSI(should pullup), MISO, SCK
+DigitalOut pad_cs(PD_2);
+
+// LED
+DigitalOut red(PB_5);
+DigitalOut yellow(PA_10);
+
+// PS pad initialize
+void pspad_init()
+{
+ pad_spi.format(8, 3);
+ pad_spi.frequency(250000);
+}
+
+// Read PS Pad state
+// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
+// SE -- -- ST U R D L L2 R2 L1 R1 TR O X SQ
+void pspad_read(unsigned short *pad)
+{
+ pad_cs = 0;
+ wait_us(500);
+
+ pad_spi.write(0x80);
+ pad_spi.write(0x42);
+ pad_spi.write(0);
+ pad_spi.write(0);
+ int d1 = pad_spi.write(0);
+ int d2 = pad_spi.write(0);
+
+ pad_cs = 1;
+
+ *pad = (char)~d1 << 8 | (char)~d2;
+}
+
+int main()
+{
+ pspad_init();
+
+ unsigned short pad;
+
+ while(1)
+ {
+ pspad_read(&pad);
+
+ // Circle button
+ yellow = pad & 4;
+
+ // X button
+ red = pad & 2;
+
+ wait_ms(16);
+ }
+}
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